USn

United States Navy (USN) is the maritime service branch of the U.S. Armed Forces, under the Department of the Navy alongside the United States Marine Corps. It traces its origins to the Continental Navy founded in 1775; the modern Navy was organized with the establishment of the Department of the Navy in 1798. Its mission is to maintain a capable fleet, project power at sea, deter aggression, and protect sea lines of communication through air, surface, and undersea operations.

The Navy is led by the Chief of Naval Operations (CNO), who reports to the Secretary of the Navy and ultimately to the Secretary of Defense. It includes active-duty forces, the Navy Reserve, and associated civilian personnel. The force emphasizes aircraft carriers, nuclear submarines, surface combatants, and naval aviation. Notable platforms include Nimitz- and Ford-class aircraft carriers, Ohio-class ballistic-missile submarines, Arleigh Burke-class destroyers, and Ticonderoga- and Burke-class cruisers, with carrier-based aircraft such as the F/A-18 and the F-35C.

Historically, the U.S. Navy played a decisive role in World War II and continues as a central element of U.S. military power in the 21st century. It maintains forward presence via fleets and bases around the world, including Norfolk, San Diego, and Yokosuka. Core values are honor, courage, and commitment, and the service emphasizes joint readiness, interoperability with allies, and modernization of sensors, unmanned systems, and network-centric capabilities.